Mark sys.version_info[0] < 3 and similar comparisons as outdated

[charliermarsh]

Summary

Closes #12993.

[charliermarsh]

== 3 is maybe a little dubious, but we were already doing it. (== is the only case we handled before.)

[codspeed-hq]

CodSpeed Performance Report

Merging #13175 will degrade performances by 7.61%

_{Comparing charlie/sys (b813d91) with main (28ab5f4)}

Summary

❌ 1 regressions
✅ 31 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	charlie/sys	Change
❌	linter/all-rules[numpy/globals.py]	726.4 µs	786.3 µs	-7.61%

[github-actions]

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

✅ ecosystem check detected no linter changes.